An electrolytic sodium hypochlorite generator

Abstract

The utility model relates to an electrolytic sodium hypochlorite generator, which includes a first salt dissolving tank, a soft water bucket, a second salt dissolving tank, a first water pump and a second water pump. The first salt dissolving tank is used for containing supersaturated sodium chloride solution, the soft water bucket is used for containing soft water, the second salt dissolving tank is used for containing sodium chloride solution, the first water pump is used for pumping the supersaturated sodium chloride solution to the second salt dissolving tank, and the second water pump is used for pumping the soft water to the second salt dissolving tank. By adopting the above technical solution, the first water pump transports the supersaturated sodium chloride solution in the first salt dissolving tank to the second salt dissolving tank, and the second water pump transports the soft water in the soft water bucket to the second salt dissolving tank, realizing the dual-path independent control of the supersaturated sodium chloride solution and the soft water, adjusting the concentration of the sodium chloride solution, so as to obtain a stable and electrolytic solution meeting the preparation requirements, which is beneficial to the next electrolysis effect and achieves the purpose of improving the yield and quality of the sodium hypochlorite solution.

Description

Technical Field

[0001] This utility model relates to the technical field of sodium hypochlorite production, and in particular to an electrolytic sodium hypochlorite generator. Background Technology

[0002] Sodium hypochlorite, as a highly efficient and safe disinfectant, is widely used in drinking water treatment, medical and health care, food processing and industrial wastewater treatment. Traditional methods for preparing sodium hypochlorite mainly include chemical methods and electrolytic methods. Among them, the raw material of electrolytic method, table salt, has gradually become the mainstream technical solution due to its advantages such as easy availability, controllable reaction process and pure product without by-products.

[0003] Currently, in the brine preparation stage before electrolysis, conventional equipment typically uses a single salt dissolving tank to directly prepare sodium chloride solution. This results in significant concentration fluctuations. Since the solubility of sodium chloride is significantly affected by temperature (35.7 g / 100 mL at 0℃ and 39.8 g / 100 mL at 100℃), changes in ambient temperature can easily lead to crystal precipitation in the saturated solution or insufficient concentration, thus affecting the ion conduction efficiency within the electrolytic cell. More seriously, unstable salt concentrations can cause uneven anolyte current density distribution during electrolysis, accelerating electrode passivation and promoting side reactions, generating chlorate, ultimately reducing the production efficiency and quality of sodium hypochlorite. Furthermore, traditional salt dissolving and dilution processes are mostly manual, wasting labor and being inefficient. Studies have shown that when the salt concentration is below 2%, the electrolytic cell voltage increases, leading to increased energy consumption; when it exceeds 6%, scale easily forms on the electrode surface, shortening electrode life.

[0004] The existing technical solutions have the following drawbacks: they cannot stably control the concentration of sodium chloride solution, which affects the ion conduction efficiency of sodium chloride solution during electrolysis, thereby reducing the production efficiency and quality of sodium hypochlorite. Utility Model Content

[0005] The purpose of this invention is to provide an electrolytic sodium hypochlorite generator to solve the problems existing in the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] An electrolytic sodium hypochlorite generator, comprising:

[0008] The first salt dissolving tank has a radially penetrating first liquid outlet at the bottom of its side wall. The first salt dissolving tank is used to hold a supersaturated sodium chloride solution.

[0009] A soft water bucket, the soft water bucket being used to hold soft water;

[0010] The second salt dissolving tank is used to hold sodium chloride solution;

[0011] The first water pump is located between the first salt dissolving tank and the second salt dissolving tank. The first water pump is used to pump supersaturated sodium chloride solution and send it to the second salt dissolving tank.

[0012] A second water pump is installed between the soft water tank and the second salt dissolving tank. The second water pump is used to draw soft water and send it to the second salt dissolving tank.

[0013] By adopting the above technical solution, the first water pump transports the supersaturated sodium chloride solution in the first salt dissolving tank to the second salt dissolving tank, and the second water pump transports the soft water in the soft water tank to the second salt dissolving tank. This achieves independent dual-path control of the supersaturated sodium chloride solution and soft water, which controls the preparation ratio of the supersaturated sodium chloride solution and soft water, and adjusts the concentration of the sodium chloride solution. This results in a stable sodium chloride solution that meets the preparation requirements, which is beneficial to the subsequent electrolysis effect and achieves the goal of improving the yield and quality of sodium hypochlorite solution.

[0014] In a further embodiment, the first water pump and the second water pump have the same structure. The first water pump includes a housing, an impeller and a first servo motor. The housing is provided with an integrally formed inlet and outlet. The impeller is disposed inside the housing. The output shaft of the first servo motor passes through one side of the housing and is fixedly connected to the axis of the impeller. The first servo motor is used to drive the impeller to rotate.

[0015] By adopting the above technical solution, the first pump is used to extract supersaturated sodium hypochlorite solution, and the second pump is used to extract soft water. When the first or second pump needs to start working, the impeller inside the casing, under the action of the first servo motor, can control the conveying speed of the supersaturated sodium chloride solution or soft water, so that the supersaturated sodium chloride solution and soft water are conveyed in a certain proportion, and the flow rate is stable and controllable. This is beneficial for diluting the supersaturated sodium chloride solution, making it easier to obtain an electrolytic solution that meets the preparation requirements, improving the concentration accuracy of the electrolytic solution, and ultimately improving the production quality and efficiency of sodium hypochlorite.

[0016] In a further embodiment, a piping unit is also included for conveying soft water and a supersaturated sodium chloride solution, the piping unit specifically comprising:

[0017] The first water pipe is used to connect the first salt dissolving tank and the first water pump.

[0018] The second water pipe is used to connect the first water pump and the second salt dissolving tank.

[0019] The third water pipe is used to connect the soft water tank and the second water pump.

[0020] and a fourth water pipe, which is used to connect the second water pump and the second salt dissolving tank.

[0021] By adopting the above technical solution, the first and second water pipes provide a stable transportation channel for the supersaturated sodium chloride solution through the first water pump, enabling reliable transmission of the supersaturated sodium chloride solution. The third and fourth water pipes provide a stable transportation channel for the soft water through the second water pump, enabling reliable transmission of the soft water. The layout of the pipeline units ensures a clear and orderly transportation path for the supersaturated sodium chloride solution and soft water, reducing the risk of chaotic transportation and facilitating the control of the preparation accuracy of the electrolytic solution. At the same time, the independent pipelines facilitate maintenance and repair, allowing for quick location and resolution of blockages, leaks, and other problems, ensuring the continuous and stable operation of the electrolytic sodium hypochlorite generator and improving the production efficiency and quality of sodium hypochlorite.

[0022] In a further embodiment, the second salt dissolving tank is equipped with a stirring mechanism, the stirring mechanism comprising:

[0023] A vertical rod, which is installed inside the first salt dissolving tank;

[0024] Blades, which are fitted onto the bottom end of the vertical rod, are used to stir supersaturated sodium hypochlorite;

[0025] The first salt dissolving tank has a through hole at the geometric center of its top. The second servo motor is located on top of the first salt dissolving tank, and its output shaft passes through the through hole and is fixedly connected to the second vertical rod.

[0026] By adopting the above technical solution, the output shaft of the second servo motor drives the vertical rod to rotate, and the blades installed at the bottom of the vertical rod can directly act on the inner bottom of the second salt dissolving tank, promoting the uniform mixing of supersaturated sodium chloride solution and soft water in the second salt dissolving tank, effectively preventing the supersaturated sodium chloride solution from crystallizing and precipitating, improving the dilution efficiency of the supersaturated sodium chloride solution and ensuring the stability of the electrolytic solution concentration, thus providing good conditions for the subsequent electrolytic reaction.

[0027] In a further embodiment, a water level detector is provided on the inner side wall of the second salt dissolving tank.

[0028] By adopting the above technical solution, the water level detector can monitor the water level in the second salt tank in real time, which facilitates timely replenishment of supersaturated sodium chloride solution and soft water solution, thereby improving production efficiency.

[0029] In a further embodiment, a filter screen is provided at the end of the first water pipe that connects to the first salt dissolving tank.

[0030] By adopting the above technical solution, the filter screen can effectively intercept insoluble crystals in the supersaturated sodium chloride solution, preventing crystals from entering the first water pipe, the second water pipe, the first water pump, and the second salt dissolving tank. This avoids blockages in the first and second water pipes and damage to the first water pump, ensuring smooth delivery of the supersaturated sodium chloride solution and preventing crystals from entering the second salt dissolving tank and affecting the preparation of the electrolyte solution.

[0031] In summary, this utility model has the following beneficial effects:

[0032] 1. The setup, in which a first water pump transfers the supersaturated sodium chloride solution from the first salt dissolving tank to the second salt dissolving tank, and a second water pump transfers the soft water from the soft water tank to the second salt dissolving tank, enables independent dual-path control of the supersaturated sodium chloride solution and soft water. This allows for control over the ratio of supersaturated sodium chloride solution to soft water, adjusting the concentration of the sodium chloride solution to obtain a stable sodium chloride solution that meets the preparation requirements. This is beneficial for the subsequent electrolysis process, thereby improving the yield and quality of the sodium hypochlorite solution. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 2 This is a structural schematic diagram of the pipe unit used to illustrate this utility model;

[0035] Figure 3 This is a structural schematic diagram of the first water pump used to illustrate this utility model.

[0036] In the diagram, 1 is the first salt dissolving tank; 2 is the soft water tank; 3 is the second salt dissolving tank; 4 is the first water pump; 41 is the outer casing; 42 is the impeller; 43 is the first servo motor; 5 is the second water pump; 6 is the piping unit; 61 is the first water pipe; 62 is the second water pipe; 63 is the third water pipe; 64 is the fourth water pipe; and 7 is the stirring mechanism. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings.

[0038] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0039] Example:

[0040] like Figures 1-3 As shown, an electrolytic sodium hypochlorite generator includes a first salt dissolving tank 1, a soft water tank 2, a second salt dissolving tank 3, a first water pump 4, a second water pump 5, a piping unit 6, a stirring structure 7, and a water level detector. The piping unit 6 includes a first water pipe 61, a second water pipe 62, a third water pipe 63, and a fourth water pipe 64. The first water pump 4 is located between the first salt dissolving tank 1 and the second salt dissolving tank 3. The first salt dissolving tank 1 is connected to the first water pump 4 through the first water pipe 61, and the first water pump 4 is connected to the second salt dissolving tank 3 through the second water pipe 62. The second water pump 5 is located between the soft water tank 2 and the second salt dissolving tank 3. The soft water tank 2 is connected to the second water pump 5 through the third water pipe 63, and the second water pump 5 is connected to the second salt dissolving tank 3 through the third water pipe 63, thus forming a dual-path independent control system.

[0041] First, excess salt is poured into the first salt dissolving tank 1, and then an appropriate amount of soft water is injected into the first salt dissolving tank to form a supersaturated sodium chloride solution. The first outlet, which is radially penetrating the bottom of the side wall of the first salt dissolving tank 1, is used to discharge the supersaturated sodium chloride solution in subsequent processes. A filter screen is installed at the connection between the first outlet and the first water pipe 61. Because there is excess sodium chloride crystal in the first salt dissolving tank 1, the filter screen is used to filter out undissolved sodium chloride crystals to prevent sodium chloride crystals from entering the first water pipe 61, the second water pipe 62, the first water pump 4, and the second salt dissolving tank 3, which would interfere with the preparation of the electrolyte solution. During the injection process, attention should be paid to controlling the injection speed and amount of the supersaturated sodium chloride solution to avoid the supersaturated sodium chloride easily overflowing from the first salt dissolving tank. At the same time, the liquid level of the supersaturated sodium chloride should be observed to ensure that it is within a safe range. An appropriate amount of soft water is injected into the soft water tank 2. The purity of the soft water is crucial to the quality of the final sodium hypochlorite solution produced.

[0042] The first water pump 4 and the second water pump 5 are started. The first water pump 4 and the second water pump 5 have identical structures. The first water pump 4 includes a housing 41, an impeller 42, and a first servo motor 43. The housing 41 has an integrally formed inlet and outlet, and its cross-section is volute-shaped. This design allows the supersaturated sodium chloride solution and soft water to flow more smoothly within the first water pump 4 and the second water pump 5, respectively, reducing energy loss and accelerating the conveying efficiency. The first servo motor 43 drives the impeller to rotate, generating… The powerful suction force smoothly transports the supersaturated sodium chloride solution from the first salt dissolving tank 1 through the first water pipe 61, the first water pump 4, and the second water pipe 62 to the second salt dissolving tank 3. At the same time, the second water pump 5 is used to smoothly transport soft water from the soft water tank 2 through the third water pipe 63, the second water pump 5, and the fourth water pipe 64 to the second salt dissolving tank 2. The dual-path control of the supersaturated sodium chloride solution and soft water facilitates the adjustment of the concentration of the electrolytic solution, reduces the degree of interference in the subsequent electrolysis process, and improves the production quality and efficiency of sodium hypochlorite.

[0043] When the supersaturated sodium chloride solution and soft water enter the second salt dissolving tank 3, the stirring mechanism 7 is activated. The vertical rod in the stirring mechanism 7 is set inside the second salt dissolving tank 3. The output shaft of the second servo motor passes through the through hole at the top of the first salt dissolving tank 1 and is fixedly connected to the vertical rod, driving the blades sleeved at the bottom of the vertical rod to rotate. The blades fully stir the supersaturated sodium chloride solution and soft water, so that the supersaturated sodium chloride solution and soft water are quickly and evenly mixed to form an electrolyte solution of suitable concentration.

[0044] Meanwhile, a water level detector installed on the inner side wall of the second salt dissolving tank 3 monitors the hydraulic pressure inside the tank in real time. By observing the changes in water level, the liquid level height of the solution in the second solution tank can be accurately determined. The water level detector is electrically connected to the first water pump 4 and the second water pump 5. When the liquid level is too low, the hydraulic detector will transmit a signal to the first water pump 4 or the second water pump 5 to realize the automatic water replenishment function of the second salt dissolving tank, which can save labor and improve production efficiency.

[0045] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0046] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An electrolytic sodium hypochlorite generator, characterized by, include: The first salt dissolving tank (1) has a radially penetrating first liquid outlet at the bottom of its side wall. The first salt dissolving tank (1) is used to hold a supersaturated sodium chloride solution. Soft water bucket (2), the soft water bucket (2) is used to hold soft water; The second salt dissolving tank (3) is used to hold sodium chloride solution; The first water pump (4) is located between the first salt tank (1) and the second salt tank (3). The first water pump (4) is used to pump supersaturated sodium chloride solution to the second salt tank (3). The second water pump (5) is located between the soft water tank (2) and the second salt dissolving tank (3). The second water pump (5) is used to pump soft water and send it to the second salt dissolving tank (3).

2. The electrolytic sodium hypochlorite generator according to claim 1, characterized in that, The first water pump (4) and the second water pump (5) have the same structure. The first water pump (4) includes a housing (41), an impeller (42) and a first servo motor (43). The housing (41) is provided with an integrally formed inlet and outlet. The impeller (42) is located inside the housing (41). The output shaft of the first servo motor (43) passes through one side of the housing (41). The output shaft is fixedly connected to the axis of the impeller (42). The first servo motor (43) is used to drive the impeller (42) to rotate.

3. The electrolytic sodium hypochlorite generator according to claim 1, characterized in that, It also includes a piping unit (6) for conveying soft water and a supersaturated sodium chloride solution, the piping unit (6) specifically comprising: The first water pipe (61) is used to connect the first salt dissolving tank (1) and the first water pump (4). The second water pipe (62) is used to connect the first water pump (4) and the second salt dissolving tank (3); The third water pipe (63) is used to connect the soft water tank (2) and the second water pump (5); and a fourth water pipe (64), which is used to connect the second water pump (5) and the second salt dissolving tank (3).

4. The electrolytic sodium hypochlorite generator according to claim 1, characterized in that: The second salt dissolving tank (3) is equipped with a stirring mechanism (7), which includes: A vertical rod, which is installed inside the first salt dissolving tank; Blades, which are fitted onto the bottom end of the vertical rod, are used to stir supersaturated sodium hypochlorite; The first salt dissolving tank has a through hole at the geometric center of its top. The second servo motor is located on top of the first salt dissolving tank, and its output shaft passes through the through hole and is fixedly connected to the second vertical rod.

5. The electrolytic sodium hypochlorite generator according to claim 1, characterized in that: A water level detector is installed on the inner side wall of the second salt dissolving tank (3).

6. An electrolytic sodium hypochlorite generator according to claim 3, characterized in that: A filter screen is provided at one end of the first water pipe (61) that connects to the first salt dissolving tank (1).

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